Question

simplify 3x(4x-5)+3and find its value for
x=3
x=1/2 answer for question ​

Answer 1

Answer:

1) 3×3(4×3-5) +3

9(12-5) +3

9×7+3

63+3

66

2) 3×1/2(4×1/2-5) +3

3/2(2-5) +3

3/3×-3+3

-9/3 +3

-3+3

0

Step-by-step explanation:

hope it will help u............

Answer 2

:

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3x(4x−5)+3=12x^2−15x+3

x=3 gives the value 12(9)−15×3+3

                             =108−45+3

                              =66

x=1/2 gives the value 12(1/4)−15×(1/2)+3

                             =3−7.5+3

                              = - 3/2